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Class Information
Number: 367/183
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Receivers > Moving coil > Spider spring
Description: Subject matter having resilient means to support the coil radially with respect to the core in such a way as to permit relative movement of the coil axially with respect to the core.










Patents under this class:

Patent Number Title Of Patent Date Issued
8433520 Job monitoring methods and apparatus for logging-while-drilling equipment Apr. 30, 2013
8060311 Job monitoring methods and apparatus for logging-while-drilling equipment Nov. 15, 2011
8050144 Vertical geophone having improved distortion characteristics Nov. 1, 2011
8027225 Methods and systems for seismic sensors Sep. 27, 2011
7961553 Sensory signal output apparatus Jun. 14, 2011
7929379 Methods and systems for seismic sensors Apr. 19, 2011
7639566 Geophone securement mechanism Dec. 29, 2009
7505369 Geophone with mass position sensing Mar. 17, 2009
7338398 Continuously variable transmission or clutch with ortho-planar compliant mechanism Mar. 4, 2008
7099235 Geophone and method of manufacturing a geophone Aug. 29, 2006
5555222 Low distortion geophone spring Sep. 10, 1996
5134593 Geophone spring Jul. 28, 1992
4685094 Lateral compliance device for geophone springs Aug. 4, 1987
4623991 Delta-shaped geophone spring Nov. 18, 1986
4504932 Geophone having a non-conductive coilform Mar. 12, 1985
4458344 Tapered geophone spring Jul. 3, 1984
4323994 Geophone spring Apr. 6, 1982
4285054 Geophone Aug. 18, 1981
4238845 Geophone springs Dec. 9, 1980
4144520 Geophone having electromagnetic damping means Mar. 13, 1979











 
 
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